| Title |
Elimination of a Common Mode Voltage Pulse in Converter/Inverter System Modifying Space-Vector PWM Method |
| Authors |
이현동(Lee, Hyeon-Dong) ; 이영민(Lee, Yeong-Min) ; 설승기(Seol, Seung-Gi) |
| Keywords |
Common mode voltage ; Space-vector PWM ; Leakage current |
| Abstract |
This paper proposes a common-mode voltage reduction method base on SVPWM(Space-Vector Pulsewidth Modulation) in three phase PWM converter/inverter system. By shifting the active voltage vector of inverter and aligning this to the active vector of converter, it is possible to eliminate a common-mode voltage pulse in one control period. Since the proposed PWM method maintains the active voltage vector, it does not affect the control performance of PWM converter/inverter system. Without any extra hardware, overall common mode voltage dv/dt and conrresponding leakage current can be reduced to two-third of the conventional three phase symmetric SVPWM scheme. |